Care and maintenance
contrAA 600
Edition 01/2014
57
Fig. 34
Safety circuit switch for hardware
7.2.3
Cleaning the sample chamber
Clean the sample chamber regularly using a lint-free cloth moistened with alcohol.
Check the radiation entrance and exit windows of the sample chambers, if energy
losses are detected:
Wipe the windows free of streaks with a lint-free cloth soaked in alcohol (optical
cloth).
IMPORTANT
After cleaning the sample chamber window with alcohol, it takes approx. 1 h until the com-
plete UV transmission has been restored.
7.3
Removing and installing the xenon lamp
WARNING! ELECTRIC SHOCK!
Switch off the contrAA 600 at the mains switch. It is very important that you also remove the
mains plug from the 35 A connection before replacing fuses!
CAUTION! CONTAMINATION OF THE LAMP WINDOW!
Do not touch the lamp window when exchanging the lamp! Decontaminations have a nega-
tive impact on the lamp properties!
1.
Open the lamp chamber door (at the front on the left of the sample chamber of the
graphite tube furnace).
2.
Place a cloth or similar under the couplings. Small amounts of water may occur when
disconnecting the couplings.
Disconnect the quick couplings for the cooling water at the bottom of the lamp housing.
To disconnect the couplings, press on the (metal) interlock until it clicks into place, then
pull out the coupling part to the bottom.
The coupling parts contain valves that close automatically when they are being discon-
nected. This keeps cooling water from escaping. A few drops, however, will still escape
from the coupling parts.
3.
Use the hexagon socket wrench (5 mm) with T-handle (part of the scope of delivery) to
unscrew the horizontal attachment screw of the lamp housing completely.
